What are the different types of brain stem tests?
Doctors use brain stem tests to determine the overall level of functioning in this area of the brain. Brain STEM controls several functions of life, including breathing, heart rate and consciousness. The most common test is the test of the sound evoked evoked brain stem. In the UK, where the death of brain stem is considered to be the main criteria for determining whether a person is technically alive or dead, further tests must be carried out before the person's statement.
The test of the sound evoked brain stem Evoked Response uses a number of sounds to induce reaction in the brain stem. During the procedure, the patient wears a set of headphones through which the sounds are supplied. The electrodes connected to the scalp and the lobes measure the brain stem response to these sounds. The main purpose of the test is to determine the overall functioning of the nervous system and diagnose hearing problems.
some countries such as the United Kingdom define the death and the irreversible loss of consciousness and irreversible lossthe ability to breathe. Since the brain strain plays a major role in both functions, if it is damaged outside the repair, patients often correspond to the definition of death. A number of brain stem tests must be carried out before the patient can be declared dead. These tests are performed by two different doctors a few hours apart.
, before doctors can start brain stem tests, certain criteria must be met. First, the supposed death of the patient's brain stem must have a cause, such as an accident or a disease that affects this area of the brain. Second, coma cannot be the result of something potentially reversible, such as an overdose of a drug or metabolic disorder. After meeting these two main criteria, the functions of brain stem functions may begin.
The first of the brain stem tests involves radiation of light, usually a pen light, the patient's eyes. When the brain strain stops working, pupils seem to beFixed and widespread. Usually this test is performed without any special equipment except light. In rare cases, however, patients still show signs of pupil activity despite the fulfillment of all other criteria for the death of brain stem and to determine the cause of an abnormal reaction, a special imaging scan or test device can be used.
Testing the corneal reaction to irritation by the third with some kind of coarse material, such as a piece of gauze, is usually the next step in a number of brain stem tests. In a patient with a functioning brain stem, this highly sensitive part of the eye would cause pain pain when it touches the gauze. Other tests to measure the reaction of the pain include firmly grip nose and extend the forehead. The reflex of the gag, which is controlled by the brain stem, is also measured by inserting the tube into the patient's neck.
Final Aunt for determining the death of brain stem involves the removal of the patient from life support for a short time to see if the patient will spontaneously beginto breathe without help. A few hours later, these tests must be repeated for the second time by another higher doctor to confirm the results. If the patient fails for the second time, the doctor may legally declare death.